Motor.



D. S. WAUGH.

MOTOR.

APPLICATION mu) DEC. 19. 1913.

Patented Maiy16,1916

2 SHEETS-SHEET 1,

WWW

D. S! WAUGH MGTO-R APPLICATIDN' FILED 05019, 1913.

nted M21316, 1916.

2 SHEETS'SHEET Z1 Pate DANIEL S. WAUGH, OF

DENVER. COLORADO. ASSIGNOR TO DENVER ROCK DRILL MANU- FACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF DELAWARE.

MOTOR.

Specification of Letters Patent.

Patented May 16, 1916.

Application filed December 19, 1913. Serial No. 807,676.

To all whom it may concern:

Be it known that I, I)AN1EL S. \Vauon, a citizen of the United States, residing at Denver, in the county of Denver and State of ilolorado, have invented new and. usetul .lu'iprovements in Motors, of which the following is a specification.

The present invention relates more particularly to the means for ctl'ecting the opcration ol' the piston of a motor f the pneumatic hamu'ujer type, and one of the primary objects is to provide a. combination of parts, in which the pi ton may be mounted to op crate in a chuck sleeve or similar element that is: rotatable, the arrangement being: such that the motive fluid is pro 'ierl v supplied to the piston and the distribution of said lluid made cll'ect'ive, irrespective of the rotation of such sleeve.

An. embodiment of the invention illustrated in the accompai'iying drawings, wherein Figure 1 is a longitudinal sectional view through the structure. Fig. 9 is a horizontal sectional view on the lii c N 2 of l*i;r. l. Fig. 3 a view that is diagrammatic in its character in order to illustrate the relation of the various passageways and ports, so that the operation of the me hanisin may be made clear.

Similar reference numerals designate corresponding parts in all the figures oi the drawings.

In the embodiment disclosed, a cylinder member 4 is employed having a bore pro vided with sec ions or portions of dill'erent diameters, designated respcctiwly 5, (3, and 7, and thereby producing; internal shoulders S and 9, the portion of smallestdiameter being at the front end of the cylinder member, the portion of greatest diameter being at the rear end thereof. .Tn this cylinder is rotatably mounted a chuclv', hich includes a sleeve ha ving portions or .rtions 10 and 11 of dillerent diameters. the portion 10 snugly rotating in the bore section 7 of the cylinder member, and the portion 11 fitting the portion 6 of said cylinder bore. This sleeve is held against forward movement by a shoulder 12 that abuts against the shoulder 8 and by a flange 13. which is located in the largest porton 5 of the cylinder bore and cooperates with the shoulder 9. The sleeve is held a :Iainst rearward movement by a retaining out 14. on to the projecting end thereof and bearing against the front end of the cylinder member. This retaining nut serves also to hold in place a chuck bushing 15 having" a flange. 16 that is interposed between the front end of the sleeve and the head of said nut, being held against rotation by a pin 17. The bushing 15 is provided with an angular socket 18 to receive the shank 1 of a suitable tool.

it reciprocatory piston 20 is mounted in the rear portion ll of the chuck sleeve and is provided with an intermediate annular groove 31 that is intersected by spiral 0r angular lceyways 2' formed in the periphery ot the piston and disposed generally longitudinally thereof. These keyways receive the keys or feathers '23 formed upon mechanism that is employed for rotating the chuck. This mechanism is made the subjectmattcr of a separate application, and it is therefore believed to require no further explanation here. The grooves or keyways 22 are important in the present structure, inasmuch they constitute means of communication between the piston chamber in rear of the piston and the annular or peripheral groove 21 of said piston.

The. cylinder member 4 is formed upon one. side with a distributing valve casing 24, the, bore of which is provided with a central annular groove 25, and other annular grooves 26 and 97 located on opposite sides thcreot. In the bore ol the valve casing it are placed bushings Q8 and 29 having flanges 30 on their outer ends, which abut against the ends of the casing. The inner ends of the bushings 28 and 29 are spaced apart. so as to allord communication with the central groove, and said bushings t'urthern'lorc have ports 32 and 33 eommunicatine respectively with the side grooves 26 and 27. A passageway 34 leads from the rear end of the cylinder member to the annular groove 2 and another passagreway 35 leads from the groove 27 to an annular channel 36 formed in the cylinder mem er around the portion 11 of the sleeve. Said sleeve is provided with transverse ports 37 communicating with the groove All? and with the interior of the sleeve in advance of the piston. Two other annular grooves 39 and 39 are formed in the interior of the cylinder member 3 around the sleeve and are located in rear of the groove 36. The. grooves 58 and 39 are in communication with the interior of the sleeve by Ports 4M and ii formed in said sleeve. From the glOOVU 3S, a passageway leads to the interior of the bushing 2 and from the groove 39, a p. ssagevvay *l-Ti leads to and coinniunicutes with the interior oi the bushing :29. The outer end; of ti tivo bushings are closed lay [lunged plugs 44: that are held. against rotation luv pins passing through their flanges into the bushings. The bushings and closure plug are held in place by a bolt l that pae & longitudinally there through, being provided at one end with a heed 47 pinned as illustrated at against rotation, u out *llJ, being threaded on the other end of the bolt and bearing ggainst a spring so that in turn bears against the adjacent closure plug, The spring 50 preferably has enlargements .31 on its ends that rerprv iztivclv engage in sockets in the nut 49 and the closure plug 44 to prevent the rclative rotation of the parts. A. reciprocatory distributing valve. mounted in the bus-airings and 2?), and is slidable upon the bolt 46, being provided with a central enlargement 53 that bridges the space between the inner ends? of the bushings and being furthermore irovided with and em largements Bl that control the exhaust of the motive fluid. To this; end the Said hushlugs are, provided with exhaust ports 55 communicating with annular grooves 56 f u-med in the valve casing, and said grooves are in communication with an exhaust chamber 5'? shown more particularly in Fig.

The motive fluid is supplied to the distributing valve through a rotary tl'arottle valve 58 having a channel. 59 that movable into and out of connnunieation with a port 60 that leads to the space between the bushings and 29.

Referring more particularly to Fig. 3, the operation of the structure may be briefly outlined follows :----lVi'rl1 the val e in the pwition shown, moti e fluid supplied. through the throttle valve 59 and port 60 vvill enter between the lvushings and 29, and will find its: "way oirough the passage lo the annuh owc 3%. From this oove, it vr Jonah ports 37, ilvuncc oi the piston, and real-Wurdly, the h the 56, and irom ll c exhaust clm' lier 57 into the open air. 'llirc l on moves rearwardly until uncovers the porle ll 05 the rotating c luck sleeve. W ltTtillllOIl moti e ,fluidwill pass outwardly in ouch said p an s; through groove 88 and puss-agency 4-2. into the l=uz hing 28 in. rear of the distributing valve. 52. The valve will thereupon he mo ed to the right, vvlicrcupon the motive fluid will enter the passageway "55:, and thence into the cylinder member in rear of the piston,

s groove;

driving said piston forwardly, the exhaust in advance of said piston now taking place through the ports 37, the groove 36, passageways 355, front ports 55, and groove in? into the LXllilllat chamber 57. This for ward movement continues until the annular groove :3l of the. piston 20 uncov crs the ports ll, the motive lluid liehivnl the piston thence passing through the licyvvays 22. groove 21, ports ll, annular groove 33), and thus linding its way into the passageway 43. It will conaeipienlly he directed agz'uinnt the front cud ol' the distributing vulvc, illl lIlg the sumo rcarivardly and again reversing the direction of the movement of the piston.

From the foregoing, it is thought that the construction, operation and many a lvanrages of the herein described invention Will be apparent to those skilled in the art, Without further description, and it will be understood thut various chnng r: in the size, shape. proportion and minor details of con struction, may be resorted to without de parting from the spirit or sacrificing any of the advantages ot the invention.

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1.. In a motor of the character set forth, the combination with a cylinder member, of a rotatable sleeve in the cylinder member, a piston operating in the sleeve, means for delivering motive fluid through the sleeve to eIl ect the lHlCli and forth movement of the piston, and means for rotating the sleeve from the piston.

Q. In a m tor of the character set forth, the combination with a cylinder member, of a rotatable chuck sleeve in the cylinder member, a piston operating in the sleeve, an automatic distributing valve, means for delivering motive fluid from the distributing valve through the sleeve to ellect the back and forth movement of the piston, and meaun actuated by the piston for effecting a step-hy-step rotation of the sleeve.

3. In a motor of the character set forth, the combination with a cylinder member, of a. sleeve member rotatably mounted there in one of said members having an annular channel, the sleeve having ports communieating with the channel and with the interior of the sleeve, a piston operating in the sleeve, means for delivering motive fluid from the piston to the annular channel, and means associated with the rear portion of the piston and sleeve for effecting the automatic rotation of the latter from the former.

4 in a motor of the character described, the combination with a cylinder m mber. of a sleeve rotatali ly mounted therein, a piston operating: in the sleeve, means for supplying motive fluid to the piston to operate the smile, an automatic distributing valve for said motive fluid supply, and passageways leading from the cylinder member to opposite sides of the automatic valve, said sleeve having ports communicating with the passageways and alternately opened and closed by the piston during its movement.

57 In a motor of the character described, the combination with a cylinder member, of a sleeve member rotatably mounted therein, said members being formed with three annular channels between them, a reciprocatory piston operating in the sleeve member, said sleeve member having sets of port; that respectively communicate with the said annular channels, the said piston alternately covering and uncovering two of the sets of ports, means for delivering motive fluid through the third channel and third set of ports against one end of the piston, a distributing valve for controlling such delivery, nnlar channels between them, a iti'll'lvxht' and passageways leading from the other two channels to the opposite ends of the distributing valve.

6. In a motor of the character described, the combination with a cylinder member and a piston operating therein, of a chuck rotatably mounted in the cylinder member, means for rotating the chuck, slid-ably interlocked with the piston, means including an automatic distributing valve for delivering motive fluid to the piston to actuate the same, and means for delivering motive fluid against the distributing valve to operate the same, said latter means being supplied through said interlocking connection between the piston and chuck rotating means.

7. in a motor of the character described, the combination with a cylinder member, of a rotatable sleeve in the cylinder member, a reciprocatory piston operating in the sleeve and having longitudinally disposed key 'ays, means for cllecting the rotation of the sleeve, engaged in the keyways and permitting the passage of. fluid therethrough, said piston furthermore having an annular groove communicating with the heyways, and said sleeve having ports with which the groove communicates during the movement ')f the pision, a distributing valve, and a parasageway leading from the ports to the distributing valve for conducting motive fluid against the same to operate it.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

DAilllQL S. \VAUGH. Witnesses:

\V. H. LEONARD, A, W. CAKES. 

